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Implement the possibility to create BigNums from their ffi counterpart

This commit is contained in:
Daniel Albert 2016-01-01 19:36:29 +00:00
parent 5813ca371d
commit 5e5d24ee25
1 changed files with 14 additions and 0 deletions
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14
openssl/src/bn/mod.rs
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@ -102,6 +102,20 @@ impl BigNum {
}) })
} }
pub fn new_from_ffi(orig: *mut ffi::BIGNUM) -> Result<BigNum, SslError> {
if orig.is_null() {
panic!("Null Pointer was supplied to BigNum::new_from_ffi");
}
unsafe {
let r = ffi::BN_dup(orig);
if r.is_null() {
panic!("Unexpected null pointer from BN_dup(..)")
} else {
Ok(BigNum(r))
}
}
}
pub fn new_from_slice(n: &[u8]) -> Result<BigNum, SslError> { pub fn new_from_slice(n: &[u8]) -> Result<BigNum, SslError> {
BigNum::new().and_then(|v| unsafe { BigNum::new().and_then(|v| unsafe {
try_ssl_null!(ffi::BN_bin2bn(n.as_ptr(), n.len() as c_int, v.raw())); try_ssl_null!(ffi::BN_bin2bn(n.as_ptr(), n.len() as c_int, v.raw()));